Detecting potentially overlapping input/output queues

A computer program product comprising a computer readable storage medium having program instructions embodied therewith, the program instructions readable and/or executable by a processor to cause the processor to:

• receive, by the processor, an input/output (I/O) queue creation request from a host;
• identify, by the processor, a first central processing unit (CPU) core that can be used to satisfy the I/O queue creation request;
• determine, by the processor, whether the first CPU core already has an I/O queue formed thereon;
• in response to determining that the first CPU core does already have an I/O queue formed thereon, determine, by the processor, whether any CPU cores do not already have a respective I/O queue formed thereon;
• in response to determining that each CPU core already has an I/O queue formed thereon, send, by the processor, one or more instructions to inform the host that satisfying the I/O queue creation request will cause an overlap with one or more existing I/O queues;
• and
• in response to receiving an indication from the host to satisfy the I/O queue creation request despite the overlap, send, by the processor, one or more instructions to use the first CPU core to satisfy the I/O queue creation request.

A system, comprising:

• a processor;
• and
• logic integrated with the processor, executable by the processor, or integrated with and executable by the processor, the logic being configured to:
• receive, by the processor, an input/output (I/O) queue creation request from a host;
• identify, by the processor, a first central processing unit (CPU) core that can be used to satisfy the I/O queue creation request;
• determine, by the processor, whether the first CPU core already has an I/O queue formed thereon;
• in response to determining that the first CPU core does already have an I/O queue formed thereon, determine, by the processor, whether any CPU cores do not already have a respective I/O queue formed thereon;
• in response to determining that each CPU core already has an I/O queue formed thereon, send, by the processor, one or more instructions to inform the host that satisfying the I/O queue creation request will cause an overlap with one or more existing I/O queues;
• and
• in response to receiving an indication from the host to satisfy the I/O queue creation request despite the overlap, send, by the processor, one or more instructions to use the first CPU core to satisfy the I/O queue creation request.